Paper package and closure therefor



E. F. HULBERT.

PAPER PACKAGE AND CLOSURE THEREFOR.

APPLICATION FILED MAY 23, I914.

Patented June 15, 1920.

UNITED STATES PATENT OFFICE.

EDWIN F. HULBERT, OF SOUTH NORWALK, CONNECTICUT, ASSIGNOR TO NATIONALPAPER CAN COMPANY, OF SOUTH NORWALK, CONNECTICUT, A CORPORATION OFDELAWARE.

PAPER PACKAGE AND CLOSURE THEREFOR.

Patented June 15, 1920.

Application filed May 23, 1914. Serial No. 840,485.

To all whom, it may concern.

Be it known that I, EDWIN F. HULBERT, a citizen of the United States,residing at South Nor-walk, in the county of F airfield and State ofConnecticut, have invented a new and useful Improvement in PaperPackages and Closures Therefor, of which the following is a full, clear,and exact description, reference being had to the accompanying drawings,forming part of th1s specification, in which- Figure 1 is a verticalsection of my'improved closure,

Fig. 2 is a corresponding view showlng a portion of the can or paperreceptacle,

Fig. 3 is a partial section showing the closure in place.

My invention relates to paper receptacles and more particularly to thefilling opening or mouth of the receptacle which I stiffen and constrictby means of an inwardly rolled beaded edge. This inwardly rolled edge isparticularly adaptable for cooperation with a removable plug closure forthe receptacle.

In carrying out my invention I roll the end of the paper can receptacleat its mouth or filling opening inwardly to provide the inwardly rolledconstricting bead. This roll may be made solid, although I prefer toform it hollow, as shown, to permit the rolled over portion to be-morereadily compressed by the removable closure. If a closure is used, theclosure is preferably made of slightly larger diameter than the beadedmouth of the receptacle so that the closure is frictionally retained.

In the drawings, referring to the Figs. 1 2 and 3; 2 represents aportion of a paper can shown as of cylindrical form and 3 the rolledover edge portion of the same. In forming the roll, the edge is turnedback sufiiciently so that it is inclosed within the roll. The inclosingof the edge portion of the roll over is important in order to preventits engagement by the closure when forced into place. The closure 4preferably has a flanged edge portion 5 with the edge turned back underthe fold, as shown, to prevent raw edges. The diameter of the closure isslightly greater than that of the internal diameter of the rolled overpart of the body,

annular lip or flange of the closure resting on the top of the roll overedge portion of the body.

In Fig. 3 I have also shown how the inner end of the closure may bepositively expanded, as at 6, by means of a suitable tool, so as to givea more positive securing action.

The advantages of my invention result from the simple, cheap andeffective form of the end portion of the upper receptacle and theclosure which afford a friction securing of the cap in place and avoidany engagement of the cap with the raw edge of the roll over.

Variations may be made in the form and arrangement of the roll over andthe cap, the material of the can and closure may be paper, pasteboard orany similar fibrous substance or composition, and other changes may bemade without departing from my invention.

I claim:

1. A paper receptacle having an inwardly turned rolled-over end portioncomprising at least one complete turn of the material andformingaconstricted mouth for the receptacle, there being a spacebetween the layers of said rolled' over portion to permit expansion ofthe inner layer, and a removable friction closure adapted to be forcedthereinto to expand the inner layer of the rolled-over portion, toretain the closure in position by the pressure exerted by therolled-over portion, substantially as described.

2. A paper receptacle having an inwardly turned rolled over end portionwith an inclosed edge and comprising at least one complete turn ofthematerial and forming a constricted mouth for the receptacle, there beinga space between the layers of said rolled over portion to permitexpanding of the inner layer thereof, and a removable closure adapted tobe forced therein to expand the inner layer of the roll, said closurebeing arranged to be held in position by the pressure of the roll andhaving the material at its edge folded back and under so as to concealthe edge of the material When the closure is in place, substantially asdescribed.

3. A paper receptacle comprising an open ended body portion having aninternal rolled beaded edge at its filling opening comprising at leastone complete turn of the material rolled inwardly upon itself into avolute or scroll to form a stifiened constricted mouth for thereceptacle, and a dished plug-like closure inserted through theconstricted opening, said closure having an enlarged portion fittedbeneath the internal rolled edge of the body portion and a flangefitting over the top of the rolled edge of the body portion;substantially as described;

4. A paper receptacle having an open ended body portion having aninwardly rolled beaded edge at its filling opening for the reception ofa removable closure comprising at least one complete turn of thematerial r'olled inwardly on itself into a volute or scroll to form astifiened constricted mouth for the receptacle; substantially asdescribed.

5. A paper receptacle having an open ended body portion having the edgeof the body material at the filling opening of the receptacle unsplitand rolled over on itself inwardly for at least one complete turn into avolute or scroll to form a stiffened constricted beaded mouth for thereceptacle for the reception of a removable closure; substantially asdescribed.

6. A paper receptaclev having an open ended body portion having the edgeof the body material at the filling opening of the receptacle rolledinwardly on itself into a volute or scroll and forming an inwardlybeaded stiffened mouth for the receptacle for the reception of aremovable closure; substantially as described.

In testimony whereof, I have hereunto set my hand.

EDWIN r. HULBERT. Witnesses i MARION H. ROBERTS, JOHN B. LAWRENCE.

